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Spool valve
                                                                                                  Spool valve                                                                                                                 Spool valve


       SYMBOL                                                                                                                      DIMENSIONS                                           HYDRAULIC CONNECTION
       Overview valves
                A    B                   A   B                                                                                         4                                  MD= 10.5Nm   (8.8)                    54
                                                                                                                                                  30  MD= 8.9Nm              13.5Nm (10.9)                    P
              a    b                       a    b
                                                                                                                                           45°
        a               b            a                b                                                                                     10
                P    T                   P   T                                                                                                                                                             A        B        1.5    16.8
            Overview spool types                                                                                                                                                                     46                        9.7
                  A B                     A B                                                                                        16                                         69.5                     T            To
                        AB1
                   b
             a
                                        a  a    b  b  AB2                                                                                                                     29                               20.8
                      b
           a
                  P T                     P T                                                                                                                                                                24
                  A B                     A B                                                                                               20           50      6.5
                        AC1
                   b
             a
                                         a  a   b  b  CB2                                                                                         14             10.5
           a
                      b
                  P T                     P T                                                                                                  44.5    99.1    93.2     14.1            PARTS LIST
                  A B                     A B                                                                                                            159.8                           Position Article  Description
                   b    AD1                 a        DB2
             a
                                         a      b  b                                                                                                                                          10 160.8252  O-ring ID 25,12 x 1,78 (FKM)
           a
                      b
                  P T                     P T                                                                                                                                                 20 253.6001  Mechanical control head ATI NG10
                  A B                     A B                                                                                               16    4.1                                         30 246.3122  Socket head screw M6 x 22 DIN 912
                        BE1
                   b
              a
                                        a   a     b  b  EA2                                                                                                                                   50 160.2120  O-ring ID 12,42 x 1,78 (NBR)
           a
                      b
                                                                                                                                                                                                 160.6124
                                                                                                                                                                                                         O-ring ID 12,42 x 1,78 (FKM)
                  P T                     P T
                  A B                     A B
                   b    AF1                 a        FB2                                                                                                                60
             a
                                        a       b  b                                                                                                                   68
                      b
           a
                  P T                     P T
                  A B                     A B                                                                                      INSTALLATION NOTES                                   ACCESSORIES
                   b    AG1                 a        GB2
             a
                                        a       b  b                                                                                Mounting type      Flange mounting                   Fixing screws               Data sheet 1.0-60
           a
                      b
                  P T                     P T                                                                                                          4 fixing holes for                Threaded subplates          Data sheet 2.9-40
                                                                                                                                                       socket head screws M6 x 40        Multi-station subplates     Data sheet 2.9-70
       PERFORMANCE SPECIFICATIONS                                                                                                   Mounting position  Any, preferably horizontal
       Oil viscosity u = 30 mm /s                                                                                                   Tightening torque  Fixing screw                      Horizontal mounting blocks  Data sheet 2.9-110
                       2
       p = f (Q)  Performance limits                        Q  = f (Q)  Leakage volume flow characteristics                                            M = 10,5 Nm ± 10 % (screw quality 8.8,   Technical explanations  Data sheet 1.0-100
                                                                                                                                                        D
                                                             L
                                                                      per control edge                                                                 zinc coated)                      Filtration                  Data sheet 1.0-50
                                                                                                                                                       max. tank pressure 80 bar
           p [bar]                                              Q [cm /min]
                                                                    3
         350  K4215                             AC1 / CB2    300  K4216                                                                                M = 13,5 Nm ± 10 % (screw quality 10.9,
                                                                                                                                                        D
         300                                    AD1 / DB2    250                                                                                       zinc coated)
         250                                                 200
         200                                    AF1 / FB2    150                                                                   Note!    The length of the fixing screw depends on the base   SEALING MATERIAL
                                                AG1 / GB2
         150                                                 100                                                                            material of the connection element.         NBR or FKM (Viton) as standard, choice in the type code
         100                                    AB1 / AB2
          50                                    BE1 / EA2     50
           0                                                   0
            0   20   40   60   80  100 120 140 160  Q [l/min]    0   50   100  150  200  250  300  350 p [bar]
                                                                   AB1/AB2; AC1/CB2; AD1/DB2; AF1/FB2; AG1/GB2
                                                                   BEA
                                                                                                                                   STANDARDS                                            SURFACE TREATMENT
       Δp = f (Q)  Pressure drop volume flow characteristics                     Volume flow direction                              Mounting interface  ISO 4401-05                      ◆  The valve body is painted with a two component paint
           p [bar]                                          Symbol     P - A   P - B   P - T   A - T   B - T                        Contamination      ISO 4406                          ◆  The roller housing and the cover are zinc-nickel coated
         20  K1022_1                     1  2  3            AB1 / AB2    5       5       -       3      2                           efficiency
                                               4
         15                                    5            AC1 / CB2    5       5       -       3      2
                                                            AD1 / DB2    5       5       -       5      4
         10                                    6
                                                            BE1 / EA2    3       3       1       3      2
          5
                                                            AF1 / FB2    6       6       6       5      4
          0                                                 AG1 / GB2    6       6       -       3      2
            0   20   40   60   80  100 120 140 160  Q [l/min]
                                                                                                                                                                                        Wandfluh AG  Postfach  CH-3714 Frutigen
                                                                                                                                                                                        Tel. +41 33 672 72 72  Fax +41 33 672 72 12  sales@wandfluh.com
                           www.wandfluh.com  Illustrations are not binding  Data subject to change  2/3  Edition: 21 22  1.5-56 E                      www.wandfluh.com  Illustrations are not binding  Data subject to change  3/3  Edition: 21 22  1.5-56 E
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